997143883 has 8 divisors (see below), whose sum is σ = 1057179200. Its totient is φ = 937864008.

The previous prime is 997143877. The next prime is 997143887. The reversal of 997143883 is 388341799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 997143883 - 2¹⁷ = 997012811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 997143883.

It is not an unprimeable number, because it can be changed into a prime (997143887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186141 + ... + 191422.

It is an arithmetic number, because the mean of its divisors is an integer number (132147400).

Almost surely, 2^997143883 is an apocalyptic number.

997143883 is a deficient number, since it is larger than the sum of its proper divisors (60035317).

997143883 is a wasteful number, since it uses less digits than its factorization.

997143883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377721.

The product of its digits is 1306368, while the sum is 52.

The square root of 997143883 is about 31577.5851356623. The cubic root of 997143883 is about 999.0470531808.

The spelling of 997143883 in words is "nine hundred ninety-seven million, one hundred forty-three thousand, eight hundred eighty-three".